Sometimes when I boot my computer up, after it loads windows and gets to the log on screen, the screen then has lines going through it. It's fine until it gets to the login screen. The video card is pretty new (got it in March along with everything else when I first built the computer). Think it's a bad card?

hey do u get the windows desktop and the lines are on windows desktop u cant get the windows desktop screen .... ? if u get windows desktop n then lines then clean ur port (AGP) with some contact cleaners but while cleaning putt the POWER OFF, otherwise a DISASTER